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arXiv 0908.3450hep-ph
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QCD中的求和环:Higgs的排他性产生和生存概率

Summing loops in QCD: Exclusive Higgs production and the survival probability

J. Miller

摘要:

用QCD偶极方法导出了Pomeron环的振幅和具有任意数目环的图的振幅。结果表明,对任意波密子增强图振幅的主要贡献,与无相互作用波密子的增强图是等价的。这提供了必要的工具,解决长期存在的理论问题,总结了坡密子回路图。在这个理论框架中,估计了增强图的完整集合对生存概率的贡献。这使得一个精确的预测的专属截面的衍射希格斯生产,其中包括所需的抑制因子筛选出一整套的硬再散射修正,在QCD。

英文摘要:

The Pomeron loop amplitude and the amplitude for the diagram with any general number of loops is derived in the QCD dipole approach. It was found that the major contribution to the amplitude of an arbitrary Pomeron enhanced diagram, is equivalent to the diagram with non interacting Pomerons. This provides the necessary tools for solving the long standing theoretical problem of summing over Pomeron loop diagrams. In this theoretical framework the contribution of the full set of enhanced diagrams to the survival probability is estimated. This enables an accurate prediction for the exclusive cross section for diffractive Higgs production, which includes the suppression factor needed to screen out the full set of hard re-scattering corrections, in QCD.

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